I switched over to an Android phone at the beginning of this week. Before I did the switch I made sure that I turned iMessage off on my iPhone 5S as well as making sure that my mobile number was not set up as a send/receive number on my iPad and MBP. I also went through the iMessage number de-activate process on the Apple website (received the code via text etc). Having done all that I still can't receive SMS texts from anyone with an iPhone or iPad - which is most of the people I know. I set up Google Hangouts for my other half so that she could still send me messages like iMessage. She even turned iMessage off completely, sent me a regular SMS, but after she turned iMessage back on it still thinks I'm on iMessage so it says the message is delivered but I obviously don't receive anything. I imagine this could be a bit of a problem since like I said above most of the people that message me, do so either from an iPad or iPhone. Has anyone been successful in de-registering a mobile number from iMessage and it actually working? Seems as if my mobile number is still linked somewhere but I've double checked everything I can think of. Any ideas?